A solar metal straight-through pipe sealing device and method

Abstract

The present invention provides a solar metal straight-through tube sealing device and method, and relates to the technical field of solar collector manufacturing. The solar metal straight-through tube sealing device has a body arranged at the upper end of a support frame, a slide bar slidably connected to the body, and the slide bar can move in a vertical direction relative to the body; a clamp is arranged at the lower end of the slide bar, and the clamp is used to clamp the glass tube of the solar metal straight-through tube; a chassis is arranged at the lower end of the support frame, and the chassis is located directly below the clamp; a limit sleeve is arranged on the chassis, and the metal ring cover of the solar metal straight-through tube is placed inside the limit sleeve; the limit sleeve is arranged as a conductor, and the outer wall of the limit sleeve is wound with an induction coil, and the induction coil is electrically connected to a power supply, and the power supply transmits an alternating current to the induction coil. A solar metal straight-through tube sealing device and method of the present invention generates an eddy current thermal effect on the limit sleeve to heat the metal ring cover, and softens when the glass tube approaches and contacts the metal ring cover, so that the glass tube and the metal ring cover are sealed as one.

Description

Technical Field

[0001] The invention relates to the technical field of solar collector manufacturing, in particular to a solar metal straight-through pipe sealing device and method. Background Art

[0002] As the country vigorously advocates the use of solar energy as clean energy, solar products have entered our daily lives, among which solar collectors are more mature. The core component of solar collectors is the solar collector tube. For solar collector tubes used in medium and high temperatures, the outer tube is generally a glass tube, and the inner tube is generally a metal tube. The metal tube is sealed to the glass tube through a metal ring cover. At present, the flame melting process is used to seal the glass tube and the metal ring cover, which consumes a lot of natural gas resources, and at the same time has high requirements on the skills level of personnel and product quality, low production efficiency, and high comprehensive cost. Summary of the invention

[0003] The object of the present invention is to provide a solar metal straight tube sealing device and method, so as to realize the sealing of the glass tube and the metal ring cover of the solar metal straight tube by adopting a process different from flame sealing.

[0004] In order to achieve the above object, the technical solutions adopted by the present invention are as follows:

[0005] A solar metal straight-through pipe sealing device comprises a support frame, a body, a slide bar, a clamp, a chassis, an induction coil and a power supply;

[0006] A machine body is arranged at the upper end of the support frame, the sliding rod is slidably connected to the machine body, and the sliding rod can move in a vertical direction relative to the machine body under the action of an external force;

[0007] A clamp is arranged at the lower end of the slide bar, and the clamp is used to clamp the glass tube of the solar metal straight-through tube;

[0008] The chassis is arranged at the lower end of the support frame, and the chassis is located directly below the clamp;

[0009] A limiting sleeve is arranged on the chassis, and a metal ring cover of the solar metal straight-through pipe is placed inside the limiting sleeve;

[0010] The limiting sleeve is configured as a conductor, an outer wall of the limiting sleeve is wound around an induction coil, the induction coil is electrically connected to a power source, and the power source transmits an alternating current to the induction coil.

[0011] Preferably, a limiting hole is provided on the chassis at the central position of the limiting sleeve, the limiting hole extends in the vertical direction, and the limiting hole is used for placing the metal tube end of the solar metal straight-through tube.

[0012] Preferably, a rack is arranged on the slide rod along the axial direction of the slide rod, and a gear meshing with the rack is rotatably connected to the body. The gear is connected to a handle via a transmission member, and an external force acts on the handle to drive the gear to rotate, and the gear rotates to drive the rack and the slide rod to move in a vertical direction relative to the body.

[0013] Preferably, the transmission member is configured as a transmission shaft, one end of the transmission shaft is coaxially connected to the gear, and the other end of the transmission shaft is connected to the handle.

[0014] Preferably, the clamp comprises a clamp seat and an air bag, wherein the air bag is located on the inner wall of the clamp seat, gas can be filled into or released from the air bag, and the air bag is used to clamp the glass tube of the solar metal straight-through tube.

[0015] Preferably, a clamping layer made of elastic material is provided at a portion of the airbag that contacts the glass tube of the solar metal straight-through tube.

[0016] Preferably, the induction coil is configured as a copper coil.

[0017] A solar metal straight-through pipe sealing method, using the above-mentioned solar metal straight-through pipe sealing device, the solar metal straight-through pipe comprises a glass tube, a metal tube and a metal ring cover;

[0018] The method is as follows:

[0019] Step 1, move the slide bar upward relative to the machine body, clamp the upper end of the glass tube on the fixture, place the metal ring cover inside the limiting sleeve, and the plug-in part of the metal ring cover faces upward;

[0020] Step 2, start the power supply to transmit alternating current to the induction coil, generate eddy current thermal effect inside the limit sleeve to heat the metal ring cover;

[0021] Step 3, the slide bar is moved downward relative to the machine body, the fixture drives the glass tube to move downward, the lower end of the glass tube approaches and contacts the plug-in portion of the metal ring cover, the lower end of the glass tube is heated to soften, the fixture continues to drive the glass tube to move downward, and the plug-in portion of the metal ring cover is inserted into the lower end side wall of the glass tube to a set depth;

[0022] Step 4: Cool the metal ring cover and the lower end of the glass tube to achieve sealing between the glass tube and the metal ring cover.

[0023] The beneficial technical effects of the present invention are:

[0024] The solar metal straight-through pipe sealing device and method of the present invention generates an eddy current thermal effect on the limiting sleeve to heat the metal ring cover, and then softens the glass tube when it approaches and contacts the metal ring cover, so that the glass tube and the metal ring cover are sealed as a whole, thereby improving the production process quality and production efficiency, having a low skill level requirement for personnel, saving natural gas energy consumption, and reducing product costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a solar metal straight-through pipe sealing device according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0027] Figure 3 This is a schematic structural diagram of a clamp portion in a solar metal straight-through pipe sealing device according to an embodiment of the present invention;

[0028] Figure 4 It is a partial structural schematic diagram of a solar metal straight-through tube according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. Certain embodiments of the present invention will be described more comprehensively with reference to the accompanying drawings, in which some but not all embodiments will be shown. In fact, the various embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments described herein; rather, these embodiments are provided so that the present invention meets applicable legal requirements.

[0030] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "back" and the like indicate directions or positional relationships based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In an embodiment of the present invention, a solar metal straight pipe sealing device is provided. Please refer to Figures 1 to 4 shown.

[0032] A solar metal straight-through pipe sealing device comprises a support frame 1, a body 2, a slide bar 3, a clamp 4, a chassis 5, an induction coil 6, a power supply 7 and the like.

[0033] The machine body 2 is arranged at the upper end of the support frame 1, and the slide bar 3 is slidably connected to the machine body 2. The slide bar 3 can move in the vertical direction relative to the machine body 2 under the action of an external force. A locking mechanism is arranged on the machine body 2. When the slide bar 3 moves to a set position relative to the machine body 2, the locking mechanism locks the slide bar 3 and the machine body 2, so that the slide bar 3 no longer moves relative to the machine body 2.

[0034] Specifically, a rack 31 is arranged on the slide bar 3 along the axial direction of the slide bar 3, and a gear is rotatably connected to the body 2, and the gear is meshed with the rack 31. The gear is connected to the handle 21 through a transmission member, and an external force acts on the handle 21 to drive the gear to rotate, and the gear rotates to drive the rack 31 and the slide bar 3 to move in a vertical direction relative to the body 2. The transmission member is configured as a transmission shaft, one end of which is coaxially connected to the gear, and the other end of which is connected to the handle 21.

[0035] A clamp 4 is provided at the lower end of the slide bar 3, and the clamp 4 is used to clamp the glass tube 91 of the solar metal straight-through tube.

[0036] Specifically, the clamp 4 includes a clamp seat 41 and an airbag 42. The airbag 42 is located on the inner wall of the clamp seat 41. The airbag 42 is connected to a gas pipeline 43. Gas can be filled into the airbag 42 through the gas pipeline 43 to expand the airbag 42, or the gas in the airbag 42 is released through the gas pipeline 43 to restore the airbag 42 to its original state. The glass tube 91 of the solar metal straight tube is placed in the area wrapped by the airbag 42, and gas is filled into the airbag 42 to expand the airbag 42, so as to clamp the glass tube 91 of the solar metal straight tube through the expanded airbag. Among them, a clamping layer 421 is provided on the airbag 42 at a position in contact with the glass tube 91 of the solar metal straight tube, and the clamping layer 421 is made of an elastic material. When the airbag 42 expands, the clamping layer 421 is deformed to fit the glass tube 91 tightly to prevent the glass tube 91 from falling off.

[0037] The chassis 5 is arranged at the lower end of the support frame 1, and the chassis 5 is located directly below the clamp 4. A limiting sleeve 8 is arranged on the chassis 5, and the metal ring cover 92 of the solar metal straight-through tube is placed inside the limiting sleeve 8. The inner space of the limiting sleeve 8 matches the outer contour of the metal ring cover 92. The metal ring cover 92 is placed inside the limiting sleeve 8 to limit the assembly position of the metal ring cover 92, so that the metal ring cover 92 is aligned with the glass tube 91.

[0038] The limiting sleeve 8 is set as a conductor, and the outer wall of the limiting sleeve 8 is wound with the induction coil 6, and the induction coil 6 is set as a copper coil. The induction coil 6 is electrically connected to the power supply 7 via the cable 71, and the power supply 7 transmits an alternating current to the induction coil 6. After the alternating current is transmitted to the induction coil 6, an eddy current thermal effect is generated inside the limiting sleeve 8 to heat the metal ring cover 92 inside the limiting sleeve 8.

[0039] A limiting hole 51 is provided on the chassis 5 at the central position of the limiting sleeve 8. The limiting hole 51 extends in the vertical direction and is used to place the end of the metal tube 93 of the solar metal straight-through tube. The end of the metal tube 93 is placed in the limiting hole 51 to limit the assembly position of the metal tube 93 so that the metal tube 93 is located in the central position of the glass tube 91.

[0040] In an embodiment of the present invention, a solar metal straight tube sealing method is also provided, using the solar metal straight tube sealing device described above in this embodiment, the solar metal straight tube includes a glass tube 91, a metal tube 93 and a metal ring cover 92;

[0041] The method is as follows:

[0042] Step 1, move the slide bar 3 upward relative to the body 2, clamp the upper end of the glass tube 91 on the fixture 4, place the metal ring cover 92 inside the limiting sleeve 8, and the plug-in portion 921 of the metal ring cover 92 faces upward;

[0043] Step 2, start the power supply 7 to transmit alternating current to the induction coil 6, generate eddy current thermal effect inside the limiting sleeve 8 to heat the metal ring cover 92;

[0044] Step 3, the slide bar 3 is moved downward relative to the machine body 2, and the clamp 4 drives the glass tube 91 to move downward, the lower end of the glass tube 91 approaches and contacts the plug-in portion 921 of the metal ring cover 92, the lower end of the glass tube 91 is heated to soften, the end of the metal tube 93 is placed in the limiting hole 51, and the clamp 4 continues to drive the glass tube 91 to move downward, and the plug-in portion 921 of the metal ring cover 92 is inserted into the lower end side wall of the glass tube 91 to a depth of 4 to 8 mm;

[0045] Step 4: Cool the metal ring cover 92 and the lower end of the glass tube 91 to achieve sealing between the glass tube 91 and the metal ring cover 92.

[0046] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the solar metal straight tube sealing device of the present invention. The solar metal straight tube sealing device and method of the present invention heats the metal ring cover 92 by generating an eddy current thermal effect on the limit sleeve 8, and then softens the glass tube 91 when it approaches and contacts the metal ring cover 92, so as to seal the glass tube 91 and the metal ring cover 92 as a whole, thereby improving the production process quality and production efficiency, requiring a lower skill level of personnel, saving natural gas energy consumption, and reducing product costs.

[0047] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar metal straight-through pipe sealing method, characterized in that: A solar metal straight-through pipe sealing device is used, which includes a support frame, a body, a slide bar, a clamp, a chassis, an induction coil and a power supply; A machine body is arranged at the upper end of the support frame, the sliding rod is slidably connected to the machine body, and the sliding rod can move in a vertical direction relative to the machine body under the action of an external force; A clamp is arranged at the lower end of the slide bar, and the clamp is used to clamp the glass tube of the solar metal straight-through tube; The chassis is arranged at the lower end of the support frame, and the chassis is located directly below the clamp; A limiting sleeve is arranged on the chassis, and a metal ring cover of the solar metal straight-through pipe is placed inside the limiting sleeve; The limiting sleeve is configured as a conductor, the outer wall of the limiting sleeve is wound with an induction coil, the induction coil is electrically connected to a power source, and the power source transmits an alternating current to the induction coil; the solar metal straight-through tube comprises a glass tube, a metal tube and a metal ring cover; The method is as follows: Step 1, move the slide bar upward relative to the machine body, clamp the upper end of the glass tube on the fixture, place the metal ring cover inside the limiting sleeve, and the plug-in part of the metal ring cover faces upward; Step 2, start the power supply to transmit alternating current to the induction coil, generate eddy current thermal effect inside the limit sleeve to heat the metal ring cover; Step 3, the slide bar is moved downward relative to the machine body, the fixture drives the glass tube to move downward, the lower end of the glass tube approaches and contacts the plug-in portion of the metal ring cover, the lower end of the glass tube is heated to soften, the fixture continues to drive the glass tube to move downward, and the plug-in portion of the metal ring cover is inserted into the lower end side wall of the glass tube to a set depth; Step 4: Cool the metal ring cover and the lower end of the glass tube to achieve sealing between the glass tube and the metal ring cover.

2. A solar metal straight-through pipe sealing method according to claim 1, characterized in that: A limiting hole is provided on the chassis at the central position of the limiting sleeve, the limiting hole extends in the vertical direction, and the limiting hole is used for placing the metal tube end of the solar metal straight-through tube.

3. A solar metal straight-through pipe sealing method according to claim 1, characterized in that: A rack is arranged on the slide rod along the axial direction of the slide rod, and a gear meshing with the rack is rotatably connected to the body. The gear is connected to a handle via a transmission member. External force acts on the handle to drive the gear to rotate, and the gear rotates to drive the rack and the slide rod to move in a vertical direction relative to the body.

4. A solar metal straight-through pipe sealing method according to claim 3, characterized in that: The transmission member is configured as a transmission shaft, one end of the transmission shaft is coaxially connected to the gear, and the other end of the transmission shaft is connected to the handle.

5. A solar metal straight-through pipe sealing method according to claim 1, characterized in that: The clamp comprises a clamp seat and an air bag, wherein the air bag is located on the inner wall of the clamp seat, gas can be filled into or released from the air bag, and the air bag is used for clamping the glass tube of the solar metal straight-through tube.

6. A solar metal straight-through pipe sealing method according to claim 5, characterized in that: A clamping layer made of elastic material is arranged at a position of the air bag that contacts the glass tube of the solar metal straight-through tube.

7. A solar metal straight-through pipe sealing method according to claim 1, characterized in that: The induction coil is configured as a copper coil.

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